公开(公告)号：US10746208B2

公开(公告)日：2020-08-18

申请号：US16063659

申请日：2016-12-16

Applicant: Hifi Engineering Inc.

Inventor： Derek Logan ,  John Hull ,  Seyed Ehsan Jalilian

IPC: F16B2/06 ,  G01N29/00 ,  G01M3/38 ,  G01M5/00 ,  G01M11/08 ,  G01N29/24 ,  G01L1/24 ,  G01H9/00 ,  G01B11/16 ,  G02B6/46 ,  G02B6/293 ,  G02B6/34

Abstract: A method for non-intrusive pipeline testing involves constructing the pipeline at a construction location that is above ground, affixing an optical fiber along a surface of a length of the pipeline that is at the construction location, measuring dynamic strain experienced by the length of the pipeline by performing optical interferometry using the optical fiber, and moving the length of the pipeline from the construction location to a different installation location. The optical fiber includes at least one pair of fiber Bragg gratings (“FBGs”) tuned to reflect substantially identical wavelengths with a segment of the optical fiber extending between the FBGs.

公开(公告)号：US10422365B2

公开(公告)日：2019-09-24

申请号：US15739336

申请日：2016-06-27

Applicant: Hifi Engineering Inc.

Inventor： John Hull ,  Seyed Ehsan Jalilian ,  Derek Logan

IPC: F16B2/24 ,  F16B2/06 ,  F17D5/00 ,  G01B9/02 ,  G02B6/46 ,  G01B11/16 ,  G02B6/00 ,  F16L3/06 ,  F17D5/06

Abstract: A clamp for clamping optical fiber to a tube. The clamp has a body portion coupled at one end to a first arm and at an opposing end to a second arm, and a resilient portion to permit the clamp to elastically deform from a closed state in which the clamp is fastened around the tube to an open state in which the clamp is radially moveable off the tube. At least one of the body portion, the first arm and the second arm has a clamping surface to clamp a portion of the optical fiber against the tube when the clamp is fastened around the tube, and a clamping mechanism operable to extend at least part of the clamping surface towards the tube when the clamp is secured to the tube to increase a clamping force applied by the clamping surface.

公开(公告)号：US20190003499A1

公开(公告)日：2019-01-03

申请号：US16063659

申请日：2016-12-16

Applicant: Hifi Engineering Inc.

Inventor： Derek Logan ,  John Hull ,  Seyed Ehsan Jalilian

IPC: F16B2/06 ,  F17D3/01 ,  G01B11/16 ,  G01H9/00 ,  G01L1/24 ,  G01M11/08 ,  G01M3/38 ,  G01M5/00 ,  G01N29/24

Abstract: A method for non-intrusive pipeline testing involves constructing the pipeline at a construction location that is above ground, affixing an optical fiber along a surface of a length of the pipeline that is at the construction location, measuring dynamic strain experienced by the length of the pipeline by performing optical interferometry using the optical fiber, and moving the length of the pipeline from the construction location to a different installation location. The optical fiber includes at least one pair of fiber Bragg gratings (“FBGs”) tuned to reflect substantially identical wavelengths with a segment of the optical fiber extending between the FBGs.